Cyrus pre XPd QX

Technical Information

All of the features of the Pre XP d, plus the additional advantages of the QX DAC:-

• The QX module features quartz reference anti jitter circuits to re align the edges of the digital signals coupled with up-sampling to 192kHz. This eliminates timing errors which manifest themselves as unwanted signals in the output.

• A 24Bit integrated filter DAC delivers state of the art technical performance in noise, distortion and linearity. This exceptional low level response allows small signals to be conveyed more faithfully.

• The analogue filter is a low noise 4 pole design, giving flat response across the audio band, with rapid attenuation of the high frequency digital images.

• Specially chosen components and the widespread use of SMD devices minimises path lengths and component leadout wires. This together with extensive power supply decoupling and star earthing enables the QX module to perform with complete freedom from noise and instability, resulting in outstanding low-level resolution and clarity.

Construction:
Enclosure - Cyrus Inverted die-cast chassis
Material - Lightweight magnesium alloy

Electrical:
Line inputs:
6 analogue

Digital inputs:
2 electrical SPDIF
2 optical SPDIF
1 USB Computer slave input

Outputs:
Zone 2 / Tape-out
Preamp-out
Headphone

Internal power Supplies:
1 x 130 VA toroidal transformer with 5 regulated rails, Plus separate toroidal transformer for control systems

External: Highly regulated PSX-R upgradeable

Communications MC-BUS™ System BUS

Remote Control Supplied with Cyrus system remote control
Standby power consumption - Less than less than 1 W

Specifications:
Distortion - 0.002%, 1kHz
Frequency Response - -3 dB, 0.1Hz and 500kHz
Input sensitivity - 500mV
Input impedance - 40kOhm (RCA).
Output voltage - 1V (Pre out)
S/N Ratio - 108dBA (ref. 40W)
Channel Balance - ±0.2dB (0dB to -63dB)
Volume control accuracy - ±0.1dB (0dB to -63dB)
Dimensions (H x W x D) - 73 x 215 x 360 (mm)
Weight - 4.0kg
Finish - Quartz Silver or Brushed Black

Digital audio performance, XP d models Pre-out
Input voltage - 500mV pk-pk
Input Impedance - 75 Ohms
Sample rate range - 32k – 96k
Audio formats - PCM stereo only
S/N ratio (Pre out, 0dB FS) - Better than 100dBA
THD+N (Pre-out, 0dB FS) - Less than 0.004%

QX DAC module
Input voltage - 500mV pk-pk
Input Impedance - 75 Ohms
Sample rate range - 32k – 96k
Audio formats - PCM stereo only
S/N ratio (Pre out, 0dB FS) - Better than 100dBA
THD+N (Pre-out, 0dB FS) - Less than 0.002%
Three additional high performance regulated power supplies,
Up-samples to 192kHz,
Factory trimmed quartz master clock for accurate re-clocking